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1da177e4 LT |
1 | /* $Id: mic.c,v 1.12.2.4 2004/01/13 23:48:39 keil Exp $ |
2 | * | |
3 | * low level stuff for mic cards | |
4 | * | |
5 | * Author Stephan von Krawczynski | |
6 | * Copyright by Stephan von Krawczynski <skraw@ithnet.com> | |
7 | * | |
8 | * This software may be used and distributed according to the terms | |
9 | * of the GNU General Public License, incorporated herein by reference. | |
10 | * | |
11 | */ | |
12 | ||
13 | #include <linux/init.h> | |
14 | #include "hisax.h" | |
15 | #include "isac.h" | |
16 | #include "hscx.h" | |
17 | #include "isdnl1.h" | |
18 | ||
19 | extern const char *CardType[]; | |
20 | ||
672c3fd9 | 21 | static const char *mic_revision = "$Revision: 1.12.2.4 $"; |
1da177e4 LT |
22 | |
23 | #define byteout(addr,val) outb(val,addr) | |
24 | #define bytein(addr) inb(addr) | |
25 | ||
26 | #define MIC_ISAC 2 | |
27 | #define MIC_HSCX 1 | |
28 | #define MIC_ADR 7 | |
29 | ||
30 | /* CARD_ADR (Write) */ | |
31 | #define MIC_RESET 0x3 /* same as DOS driver */ | |
32 | ||
33 | static inline u_char | |
34 | readreg(unsigned int ale, unsigned int adr, u_char off) | |
35 | { | |
36 | register u_char ret; | |
37 | ||
38 | byteout(ale, off); | |
39 | ret = bytein(adr); | |
40 | return (ret); | |
41 | } | |
42 | ||
43 | static inline void | |
44 | readfifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) | |
45 | { | |
46 | byteout(ale, off); | |
47 | insb(adr, data, size); | |
48 | } | |
49 | ||
50 | ||
51 | static inline void | |
52 | writereg(unsigned int ale, unsigned int adr, u_char off, u_char data) | |
53 | { | |
54 | byteout(ale, off); | |
55 | byteout(adr, data); | |
56 | } | |
57 | ||
58 | static inline void | |
59 | writefifo(unsigned int ale, unsigned int adr, u_char off, u_char * data, int size) | |
60 | { | |
61 | byteout(ale, off); | |
62 | outsb(adr, data, size); | |
63 | } | |
64 | ||
65 | /* Interface functions */ | |
66 | ||
67 | static u_char | |
68 | ReadISAC(struct IsdnCardState *cs, u_char offset) | |
69 | { | |
70 | return (readreg(cs->hw.mic.adr, cs->hw.mic.isac, offset)); | |
71 | } | |
72 | ||
73 | static void | |
74 | WriteISAC(struct IsdnCardState *cs, u_char offset, u_char value) | |
75 | { | |
76 | writereg(cs->hw.mic.adr, cs->hw.mic.isac, offset, value); | |
77 | } | |
78 | ||
79 | static void | |
80 | ReadISACfifo(struct IsdnCardState *cs, u_char * data, int size) | |
81 | { | |
82 | readfifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size); | |
83 | } | |
84 | ||
85 | static void | |
86 | WriteISACfifo(struct IsdnCardState *cs, u_char * data, int size) | |
87 | { | |
88 | writefifo(cs->hw.mic.adr, cs->hw.mic.isac, 0, data, size); | |
89 | } | |
90 | ||
91 | static u_char | |
92 | ReadHSCX(struct IsdnCardState *cs, int hscx, u_char offset) | |
93 | { | |
94 | return (readreg(cs->hw.mic.adr, | |
95 | cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0))); | |
96 | } | |
97 | ||
98 | static void | |
99 | WriteHSCX(struct IsdnCardState *cs, int hscx, u_char offset, u_char value) | |
100 | { | |
101 | writereg(cs->hw.mic.adr, | |
102 | cs->hw.mic.hscx, offset + (hscx ? 0x40 : 0), value); | |
103 | } | |
104 | ||
105 | /* | |
106 | * fast interrupt HSCX stuff goes here | |
107 | */ | |
108 | ||
109 | #define READHSCX(cs, nr, reg) readreg(cs->hw.mic.adr, \ | |
110 | cs->hw.mic.hscx, reg + (nr ? 0x40 : 0)) | |
111 | #define WRITEHSCX(cs, nr, reg, data) writereg(cs->hw.mic.adr, \ | |
112 | cs->hw.mic.hscx, reg + (nr ? 0x40 : 0), data) | |
113 | ||
114 | #define READHSCXFIFO(cs, nr, ptr, cnt) readfifo(cs->hw.mic.adr, \ | |
115 | cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt) | |
116 | ||
117 | #define WRITEHSCXFIFO(cs, nr, ptr, cnt) writefifo(cs->hw.mic.adr, \ | |
118 | cs->hw.mic.hscx, (nr ? 0x40 : 0), ptr, cnt) | |
119 | ||
120 | #include "hscx_irq.c" | |
121 | ||
122 | static irqreturn_t | |
123 | mic_interrupt(int intno, void *dev_id, struct pt_regs *regs) | |
124 | { | |
125 | struct IsdnCardState *cs = dev_id; | |
126 | u_char val; | |
127 | u_long flags; | |
128 | ||
129 | spin_lock_irqsave(&cs->lock, flags); | |
130 | val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40); | |
131 | Start_HSCX: | |
132 | if (val) | |
133 | hscx_int_main(cs, val); | |
134 | val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA); | |
135 | Start_ISAC: | |
136 | if (val) | |
137 | isac_interrupt(cs, val); | |
138 | val = readreg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_ISTA + 0x40); | |
139 | if (val) { | |
140 | if (cs->debug & L1_DEB_HSCX) | |
141 | debugl1(cs, "HSCX IntStat after IntRoutine"); | |
142 | goto Start_HSCX; | |
143 | } | |
144 | val = readreg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_ISTA); | |
145 | if (val) { | |
146 | if (cs->debug & L1_DEB_ISAC) | |
147 | debugl1(cs, "ISAC IntStat after IntRoutine"); | |
148 | goto Start_ISAC; | |
149 | } | |
150 | writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0xFF); | |
151 | writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0xFF); | |
152 | writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0xFF); | |
153 | writereg(cs->hw.mic.adr, cs->hw.mic.isac, ISAC_MASK, 0x0); | |
154 | writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK, 0x0); | |
155 | writereg(cs->hw.mic.adr, cs->hw.mic.hscx, HSCX_MASK + 0x40, 0x0); | |
156 | spin_unlock_irqrestore(&cs->lock, flags); | |
157 | return IRQ_HANDLED; | |
158 | } | |
159 | ||
672c3fd9 | 160 | static void |
1da177e4 LT |
161 | release_io_mic(struct IsdnCardState *cs) |
162 | { | |
163 | int bytecnt = 8; | |
164 | ||
165 | if (cs->hw.mic.cfg_reg) | |
166 | release_region(cs->hw.mic.cfg_reg, bytecnt); | |
167 | } | |
168 | ||
169 | static int | |
170 | mic_card_msg(struct IsdnCardState *cs, int mt, void *arg) | |
171 | { | |
172 | u_long flags; | |
173 | ||
174 | switch (mt) { | |
175 | case CARD_RESET: | |
176 | return(0); | |
177 | case CARD_RELEASE: | |
178 | release_io_mic(cs); | |
179 | return(0); | |
180 | case CARD_INIT: | |
181 | spin_lock_irqsave(&cs->lock, flags); | |
182 | inithscx(cs); /* /RTSA := ISAC RST */ | |
183 | inithscxisac(cs, 3); | |
184 | spin_unlock_irqrestore(&cs->lock, flags); | |
185 | return(0); | |
186 | case CARD_TEST: | |
187 | return(0); | |
188 | } | |
189 | return(0); | |
190 | } | |
191 | ||
192 | int __init | |
193 | setup_mic(struct IsdnCard *card) | |
194 | { | |
195 | int bytecnt; | |
196 | struct IsdnCardState *cs = card->cs; | |
197 | char tmp[64]; | |
198 | ||
199 | strcpy(tmp, mic_revision); | |
200 | printk(KERN_INFO "HiSax: mic driver Rev. %s\n", HiSax_getrev(tmp)); | |
201 | if (cs->typ != ISDN_CTYPE_MIC) | |
202 | return (0); | |
203 | ||
204 | bytecnt = 8; | |
205 | cs->hw.mic.cfg_reg = card->para[1]; | |
206 | cs->irq = card->para[0]; | |
207 | cs->hw.mic.adr = cs->hw.mic.cfg_reg + MIC_ADR; | |
208 | cs->hw.mic.isac = cs->hw.mic.cfg_reg + MIC_ISAC; | |
209 | cs->hw.mic.hscx = cs->hw.mic.cfg_reg + MIC_HSCX; | |
210 | ||
211 | if (!request_region(cs->hw.mic.cfg_reg, bytecnt, "mic isdn")) { | |
212 | printk(KERN_WARNING | |
213 | "HiSax: %s config port %x-%x already in use\n", | |
214 | CardType[card->typ], | |
215 | cs->hw.mic.cfg_reg, | |
216 | cs->hw.mic.cfg_reg + bytecnt); | |
217 | return (0); | |
218 | } | |
219 | printk(KERN_INFO "mic: defined at 0x%x IRQ %d\n", | |
220 | cs->hw.mic.cfg_reg, cs->irq); | |
221 | setup_isac(cs); | |
222 | cs->readisac = &ReadISAC; | |
223 | cs->writeisac = &WriteISAC; | |
224 | cs->readisacfifo = &ReadISACfifo; | |
225 | cs->writeisacfifo = &WriteISACfifo; | |
226 | cs->BC_Read_Reg = &ReadHSCX; | |
227 | cs->BC_Write_Reg = &WriteHSCX; | |
228 | cs->BC_Send_Data = &hscx_fill_fifo; | |
229 | cs->cardmsg = &mic_card_msg; | |
230 | cs->irq_func = &mic_interrupt; | |
231 | ISACVersion(cs, "mic:"); | |
232 | if (HscxVersion(cs, "mic:")) { | |
233 | printk(KERN_WARNING | |
234 | "mic: wrong HSCX versions check IO address\n"); | |
235 | release_io_mic(cs); | |
236 | return (0); | |
237 | } | |
238 | return (1); | |
239 | } |